.part4{
    width: 100%;
    height: 1100px;
    position: relative;
    overflow: hidden;
    margin-top: 50px;
}
.part{
    width: 100%;
    height: 0px;
    border: 4px solid rgb(182, 189, 250);
    animation:animate 10s infinite;
}
@keyframes animate{
    0%{
        width: 10px;
    }
    100%{
        width: 100%;
     
    }
}
.t13{
    font-size: 40px;
    font-family: STxingkai;
    text-align: center;
}
.a1{
    width: 450px;
    height: 500px;
    position: absolute;
    left: 150px;
    top:140px;
}
.p1{
    width: 350px;
    height: 300px;
    box-shadow: gray 2px 2px 5px 5px;
    vertical-align: bottom;
    transition: all 1s;
    margin-left: 50px;
}
.p1:hover{
    transform: scale(1.2);
}
.t14{
    margin-top: 50px;
    margin-left: 50px;
}
.t14:hover{
    color:red;
}
.t15{
    margin-left: 50px;
}
.a2{
    width: 450px;
    height: 500px;
    position: absolute;
    left: 720px;
    top:140px;
}
.a3{
    width: 450px;
    height: 500px;
    position: absolute;
    right: 170px;
    top:140px;
}
.a4{
    width: 450px;
    height: 500px;
    position: absolute;
    left: 150px;
    top:620px;
}
.a5{
    width: 450px;
    height: 500px;
    position: absolute;
    left: 720px;
    top:620px;
}
.a6{
    width: 450px;
    height: 500px;
    position: absolute;
    right: 170px;
    top:620px;
}